Mindful eating and mindful "elimination" are not excluded.
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
"...when going forward & returning, he makes himself fully alert; when looking toward & looking away... when bending & extending his limbs... when carrying his outer cloak, his upper robe & his bowl... when eating, drinking, chewing, & savoring... when urinating & defecating... when walking, standing, sitting, falling asleep, waking up, talking, & remaining silent, he makes himself fully alert." (Satipatthana Sutta)